tung oil

tung oil

(rihuazi materia medica)

[synonym] tung oil (compendium).

[source] the oil was extracted from the seeds of Jatropha fordii. Please refer to "tung oil tree" for plant morphology.

[chemical composition] tung oil, which is obtained from hot pressed tung oil, is a kind of dry oil (iodine value 157~170), heated at high temperature (200~250 degrees), and can be gelled or even solidified by self polymerization. This special property is due to the polymerization of α - tung oil, which is not found in other dry oils.

Tung oil contains 83% α - Tung acid and 15% triterpene. More detailed data: the mixed fatty acid of tung oil contains 74.5% α - Tung acid, 9.7% linoleic acid, 8.0% oleic acid, 3.3% saturated fatty acid and 0.1% unsaponifiable matter. Another data: α - Tung acid 77%, linoleic acid 10%, oleic acid 9%, saturated fatty acid 4%. There are three conjugated double bonds in α - caproic acid, so there are many geometric isomers. Among the saturated fatty acids are stearic acid and palmitic acid.

Tung oil contains vitamin E and squalene. It also contains phytosterol, pentosan and several proteins.

Tung oil is one of the toxic components of tung oil, but it is also mixed with toxic substances such as saponins in tung oil (refer to "tung oil" article). It can also heat the gas on tung oil and cause acute dermatitis when contacting with skin.

Sweet and pungent, cold and poisonous.

① Rihuazi materia medica: "cold, slightly toxic. "

② "Gangmu": "Gan Wei Xin, Han, there is a big poison. "

[function indications] to explore the wind and phlegm. Topical treatment of scabies, acne, soup fire injury, chilblain chapped.

① In the collection of Materia Medica, it is said that "scabies, worm sores, toxic swelling. "

② "Rihuazi Materia Medica": "Application of scabies and edema.". "

③ According to the compendium of medical science, it is necessary to use water and oil to sweep into the throat to detect and vomit. "

[usage and dosage] external use: apply, adjust or probe.

[prescription selection] ① for the treatment of xuefengkuo: Yihu powder (calcined, researched) and tung oil were used as the paste. On the second ship, Chen tung oil lime (calcined) and human hair (dried with tung oil). For the end, still with tung oil for paste, coated on paper, thorn hole paste. (simple formula)

② Cure chronic ulcer: tung oil, fresh mulberry white skin appropriate amount. Mash, apply to the wound, dry and then change until cured. (compendium of simple prescriptions of herbal medicine)

③ Cure foot stomach wind sores such as scabies: tung oil, human milk, etc. All the time. (Linhu jijianfang)

④ Treatment of wine red nose: tung oil into Huangdan, realgar application. (pick Yuan Fang)

⑤ Cure chilblain chapped: tung oil a bowl, hair a grip. Boil the bottle, wash with warm water, soften and apply. (emergency prescription)

⑥ Solution arsenic stone poison: tung oil three liter irrigation, spit that toxic solution. (Huatuo dangerous disease prescription)

⑦ Treat burns: tung oil, lime. First, clear the lime by stirring water, take clear water, add a few drops of tung oil, stir it with bamboo branches, and apply white gum to the affected part for half a time, which is very fast. (Science of traditional Chinese medicine (4): 631936)

⑧ Treatment of finger sores: soak the affected part in tung oil with gauze, or soak the affected finger in tung oil. (Guizhou herbal medicine)

[clinical application] 1

Apply tung oil and gypsum powder to the affected area. If the drug is used in time, it can promote the absorption of acute suppurative inflammation to subside or limit. According to the observation results of 65 cases of acute inflammation of various soft tissues, 46 cases of inflammation completely disappeared after 1-10 days of medication, 6 cases of inflammation were limited, and the symptoms were improved; 13 cases of abscess were shrunk, spontaneously broken or healed by small incision and drainage. 11 cases of acute appendicitis were cured in 3-14 days; 17 cases of appendiceal abscess were cured in 7-15 days except 1 case died of diffuse peritonitis; 13 cases of chronic pelvic adnexitis were cured in 3-6 days; others such as subphrenic abscess, abdominal abscess, acute cholecystitis, localized peritonitis, tonsillar abscess, alveolar abscess, etc. also had good effects. In the course of treatment, other therapies should be combined according to the needs of the patient's condition, such as antibiotics, infusion, blood transfusion, etc. The patients with mature abscess or incision and drainage, acute perforated appendicitis, appendiceal abscess rupture or diffuse peritonitis caused by other reasons should be treated by operation or other methods in time. Preparation and usage: mix 30-40 ml tung oil with 100 g gypsum powder, mix well, apply on gauze or oil paper, and apply on the affected area. Abdominal inflammation is applied to the anterior abdominal wall of the lesion site; pelvic accessory organ inflammation is applied to the lower abdomen, or vaginal medication is used; tonsillitis and alveolar abscess are applied to the mandible. The width of dressing must be beyond the range of inflammatory infiltration. Change the dressing 1-3 times a day according to the severity of the disease

② Treating burns

Try to soak the burned limb in tung oil barrel within 10 minutes after the burn. The soaking time is until the pain disappears or there is only slight burning sensation after the patient's limb leaves the barrel. After soaking, apply the affected area with sterilized gauze stained with tung oil, and change it once a day until the wound is dry. 9 cases were treated. After soaking, the swelling around the burn area decreased obviously, and the blister also decreased. Third degree burn eschar fell off and healed after drying. There was no infection and the scar was soft after healing.

③ Treatment of verruca vulgaris

First, gently scrape the surface of the wart with a sewing needle or knife, then drop the gum juice of tung oil fruit on the wart surface, let it dry and scab, and fall off by itself. If there is still part of the wart tissue that has not fallen off after the scab is removed from the affected area, the drug should be dropped 1 to 2 times again to ensure the healing. Do not wash the affected area with water after dropping, so as not to affect scab formation. 8 cases were treated. Except for one case of multiple drug drops, the other 7 cases of simple drug drops fell off after 1-3 times. No recurrence was found in the follow-up of half a year.

[toxicity] tung oil is highly toxic. It is used for external use in clinic and should not be taken orally. The poisoning was caused by eating tung oil by mistake. According to the observation of 289 cases, most of them had poisoning symptoms within 2 hours, the earliest was 40 minutes, and a few were about 4 hours. The main manifestations were nausea and frequent vomiting, followed by abdominal pain, headache, dizziness, dyspnea, limb convulsions, numbness of hands and feet, chills, hematemesis, hematochezia, fever, coma and laryngeal spasm. Laboratory examination showed that some cases had mild kidney damage, and could aggravate the clinical symptoms and liver function changes of liver diseases. All patients recovered after timely treatment. In addition, subacute poisoning was caused by continuous ingestion of trace tung oil. According to the report of 52 cases, their clinical manifestations are different from the above acute poisoning in the following aspects: 1. Mild gastrointestinal symptoms; 2. Obvious systemic symptoms, fever, suffocation of Qi, numbness of hands and feet far more than acute poisoning, and rare signs of acute poisoning, such as edema of lower limbs, hypoesthesia, hot flush and heart enlargement; 3. Severe prognosis, 5 cases died of heart failure.

Chinese PinYin : Tong You